Method for fabricating optical fibers with enhanced mode coupling
AssigneeBell Telephone Laboratories, Incorporated
InventorStewart E. Miller
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Abstract
A method of fabricating an optical fiber having an asymmetric refractive index profile that varies periodically along the length of the fiber is described. The prescribed variations are obtained by means of a fabrication process that includes periodically varying the source of at least one of the fiber materials in a direction transverse to the fiber-drawing direction. This transverse periodicity is translated into the desired longitudinal periodicity along the fiber by the fiber-drawing process.
Claims10
The method of fabricating an optical fiber having an asymmetric refractive index profile which varies along the length of the fiber comprising the steps of:
- providing a supply of fiber forming materials including at least a source of core material and a source of cladding material of lower-refractive index;
- heating said materials to a molten state;
- and drawing a fiber from said supply;
- CHARACTERIZED IN THAT
- the relative locations of the different sources of said fiber forming materials are caused to change as said fiber is drawn.
Dependencies are inferred from the claim text.